buliding a website like dropthings

I was assigned to develop a dropthings-like project开发者_开发百科 http://dropthings.omaralzabir.com/ so do you have any clue from where should i start ??

Thanks in advance

Erm, you could try downloading the project from Google Code where it is hosted. And then you could buy the author's book Building a Web 2.0 Portal with ASP.NET 3.5 where he explains how it was created.

You have plenty of information on the project's website.